Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents

SIGNIFICANCE AND USE
There are four basic steps necessary to obtain meaningful analytical data: preparation of the sample container, sampling, sample preservation, and analysis. In fact these four basic steps comprise the analytical method and for this reason no step should be overlooked. Although the significance of preservation is dependent upon the time between sampling and the analysis, unless the analysis is accomplished within 2 h after sampling, preservation is preferred and usually required.
SCOPE
1.1 These practices cover the various means of (1) preparing sample containers used for collection of waters to be analyzed for organic constituents and (2) preservation of such samples from the time of sample collection until the time of analysis.
1.2 The sample preservation practice is dependent upon the specific analysis to be conducted. See Section 9 for preservation practices listed with the corresponding applicable general and specific constituent test method. The preservation method for waterborne oils is given in Practice D 3325. Use of the information given herein will make it possible to choose the minimum number of sample preservation practices necessary to ensure the integrity of a sample designated for multiple analysis. For further considerations of sample preservation, see the Manual on Water.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 6.7, 6.24, and 8.1.3.

General Information

Status
Historical
Publication Date
31-May-2004
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D3694-96(2004) - Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents
English language
7 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3694 – 96 (Reapproved 2004)
Standard Practices for
Preparation of Sample Containers and for Preservation of
1
Organic Constituents
This standard is issued under the fixed designation D3694; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
4
1. Scope D2579 Test Method for Total Organic Carbon in Water
D2580 Test Method for Phenols in Water by Gas-Liquid
1.1 Thesepracticescoverthevariousmeansof(1)preparing
Chromatography
sample containers used for collection of waters to be analyzed
D2908 Practice for Measuring Volatile Organic Matter in
for organic constituents and (2) preservation of such samples
Water by Aqueous-Injection Gas Chromatography
from the time of sample collection until the time of analysis.
4
D3113 Test Methods for Sodium Salts of EDTA in Water
1.2 The sample preservation practice is dependent upon the
D3325 Practice for Preservation ofWaterborne Oil Samples
specific analysis to be conducted. See Section 9 for preserva-
D3371 Test Method for Nitriles in Aqueous Solution by
tion practices listed with the corresponding applicable general
4
Gas-Liquid Chromatography
and specific constituent test method. The preservation method
D3534 Test Method for Polychlorinated Biphenyls (PCBs)
for waterborne oils is given in Practice D3325. Use of the
4
in Water
information given herein will make it possible to choose the
D3590 Test Methods for Total Kjeldahl Nitrogen in Water
minimum number of sample preservation practices necessary
D3695 TestMethodforVolatileAlcoholsinWaterbyDirect
to ensure the integrity of a sample designated for multiple
Aqueous-Injection Gas Chromatography
analysis. For further considerations of sample preservation, see
2
D3856 Guide for Good Laboratory Practices in Laborato-
the Manual on Water.
ries Engaged in Sampling and Analysis of Water
1.3 This standard does not purport to address all of the
D3871 Test Method for Purgeable Organic Compounds in
safety concerns, if any, associated with its use. It is the
Water Using Headspace Sampling
responsibility of the user of this standard to establish appro-
D3921 Test Method for Oil and Grease and Petroleum
priate safety and health practices and determine the applica-
Hydrocarbons in Water
bility of regulatory limitations prior to use. For specific hazard
D3973 Test Method for Low-Molecular Weight Haloge-
statements, see 6.7, 6.24, and 8.1.3.
nated Hydrocarbons in Water
2. Referenced Documents D4129 Test Method for Total and Organic Carbon in Water
3
by High Temperature Oxidation and by Coulometric De-
2.1 ASTM Standards:
tection
D1129 Terminology Relating to Water
D4165 Test Method for Cyanogen Chloride in Water
D1193 Specification for Reagent Water
D4193 Test Method for Thiocyanate in Water
D1252 Test Methods for Chemical Oxygen Demand (Di-
D4281 Test Method for Oil and Grease (Fluorocarbon
chromate Oxygen Demand) of Water
Extractable Substances) by Gravimetric Determination
D1783 Test Methods for Phenolic Compounds in Water
D4282 Test Method for Determination of Free Cyanide in
D2036 Test Methods for Cyanides in Water
Water and Wastewater by Microdiffusion
D2330 Test Method for Methylene Blue Active Substances
D4374 Test Methods for Cyanides in Water—Automated
Methods for Total Cyanide, Weak Acid Dissociable Cya-
nide, and Thiocyanate
1
These practices are under the jurisdiction of ASTM Committee D19 on Water
D4515 Practice for Estimation of Holding Time for Water
and are the direct responsibilities of Subcommittee D19.06 on Methods forAnalysis
4
Samples Containing Organic Constituents
for Organic Substances in Water.
D4657 Test Method for Polynuclear Aromatic Hydrocar-
Current edition approved June 1, 2004. Published June 2004. Originally
4
approved in 1978. Last previous edition approved in 1996 as D3694 – 96. DOI:
bons in Water
10.1520/D3694-96R04.
2
Manual on Water, ASTM STP 442, ASTM, 1969.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3694 – 96 (2004)
D4744 Test Method for Organic Halides in Water by Car- 5. Apparatus
4
bon AdsorptionMicrocoulometric Detection
5.1 Forced Draft Oven, capable of operating at 275 to
D4763 Practice for Identification of
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.